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Asked by Nazlisu

I’m doing this STEM challenge at school, and the challenge is: ‘Do an investigation to find the most efficient design for a water-powered rocket.’ So the 1st question is; ‘What forces will act on the rocket as it moves through the and while the water propels it?’. Any suggestions?

Sounds really cool!😎🚀 To propel the rocket upwards you need fuel (water-power) - we can call this force 'thrust' - you can represent this as an arrow below the rocket pushing it up. Against the rocket you will have two forces - air resistance & gravity. You can represent these as smaller arrows above the rocket pushing it down. The rocket accelerates up for as long as the thrust force (pushing up) is greater than the downwards forces (gravity & air resistance).

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Husain Mukadam
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